- #1
Physiona
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- 9
Homework Statement
Triangle ABC is shown in the diagram below.
A C
AC = 3AB
<BAC = 120° Respectively
<BCA =
Show that angle BCA can be written in the form:
Homework Equations
Not sure on which equations are relevant.
Trigonometric ratios as it's non calc.
3. The Attempt at a Solution
I don't know where to begin in attempting this question. I presume I use sine rule and label the lengths but I'm not sure. Any guidance or help as to how to begin this question or approach it in the most suitable way in leading to the answer? Thank you.
Attachments
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image?rev=1&h=34&w=33&ac=1.png222 bytes · Views: 511
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image?rev=1&h=236&w=587&ac=1.png2 KB · Views: 586
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chart?cht=tx&chf=bg,s,FFFFFF00&chco=000000&chl=a.png210 bytes · Views: 267
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chart?cht=tx&chf=bg,s,FFFFFF00&chco=000000&chl=b.png214 bytes · Views: 281
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